28104332 has 12 divisors (see below), whose sum is σ = 52075800. Its totient is φ = 13225536.

The previous prime is 28104319. The next prime is 28104337. The reversal of 28104332 is 23340182.

It is a junction number, because it is equal to n+sod(n) for n = 28104298 and 28104307.

It is not an unprimeable number, because it can be changed into a prime (28104337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206582 + ... + 206717.

It is an arithmetic number, because the mean of its divisors is an integer number (4339650).

Almost surely, 2^28104332 is an apocalyptic number.

It is an amenable number.

28104332 is a deficient number, since it is larger than the sum of its proper divisors (23971468).

28104332 is a wasteful number, since it uses less digits than its factorization.

28104332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413320 (or 413318 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 28104332 is about 5301.3519030527. The cubic root of 28104332 is about 304.0355885159.

The spelling of 28104332 in words is "twenty-eight million, one hundred four thousand, three hundred thirty-two".